1306800

Appears in sequences

• Primitive e-perfect numbers: primitive elements of the e-perfect numbers (A054979).at n=4A054980
• Smallest k such that the partial sums of the divisors of k (taken in increasing order) contain exactly n primes.at n=34A187822
• List of e-perfect numbers that are not e-unitary perfect.at n=21A322858
• a(n) = A025487(n) * A324576(n) = A025487(n) * A276086(A025487(n)).at n=29A324577
• Irregular triangular array, read by rows: row n shows the coefficients of the polynomial p(n,x) defined in Comments.at n=31A329433
• Primitive exponential Zumkeller numbers that are not primitive exponential unitary Zumkeller numbers.at n=13A391091